Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:09 2012 Optimize a model with 1377 rows, 74 columns and 2754 nonzeros Presolve removed 1003 rows and 0 columns Presolve time: 0.03s Presolved: 374 rows, 74 columns, 2415 nonzeros Variable types: 0 continuous, 74 integer (74 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.159133e+01, 241 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 11.59133 0 71 7.00000 11.59133 65.6% - 0s 0 0 11.23803 0 71 7.00000 11.23803 60.5% - 0s 0 0 11.18869 0 72 7.00000 11.18869 59.8% - 0s 0 0 11.15171 0 71 7.00000 11.15171 59.3% - 0s 0 0 11.11175 0 70 7.00000 11.11175 58.7% - 0s 0 0 11.09390 0 73 7.00000 11.09390 58.5% - 0s 0 0 11.03965 0 74 7.00000 11.03965 57.7% - 0s 0 0 11.03664 0 74 7.00000 11.03664 57.7% - 0s 0 0 11.03191 0 73 7.00000 11.03191 57.6% - 0s 0 0 11.01480 0 73 7.00000 11.01480 57.4% - 0s 0 2 11.01341 0 73 7.00000 11.01341 57.3% - 0s * 52 16 4 8.0000000 10.41024 30.1% 40.0 0s Cutting planes: Clique: 43 Zero half: 1 Explored 69 nodes (3266 simplex iterations) in 0.45 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%